Republican Lindsey Graham, the new Senate Judiciary Committee chairman, told reporters that William Barr, Trump’s pick to serve as the top U.S. law enforcement official, told him Special Counsel Robert Mueller’s Russia investigation would continue if he is confirmed by the Senate as attorney general. “I can assure you he has a very high opinion of Mr. Mueller and he is committed to letting Mr. Mueller finish his job,” Graham said. Rosenstein’s impending exit as the department’s No. 2 official raises the stakes for Barr, who if confirmed would take over responsibility for the Mueller probe from Rosenstein.